Walmart may use a blimp to deploy its delivery drones

Hey, Amazon: you aren't the only one who pictures blimps full of delivery drones. Walmart has applied for a patent on "gas-filled carrier aircrafts" that would serve as airborne bases, helping courier drones fly to homes they couldn't reach if they flew from a fixed location. The concept isn't completely new, of course (Amazon filed for a similar patent in 2016) but Walmart goes into exacting detail. Blimps would fly at altitudes up to 1,000 feet and talk to a remote scheduling system that indicates when drones should fetch packages from inside the blimp and head to their destinations. The thought of ever-present Walmart blimps is more than a little odd, and there's no guarantee that it'll happen (this is just a patent), but it's more plausible than you might think.